Article
Zoology
Tomoyuki Komai, Yumi Henmi
Summary: A new species of the alpheid shrimp genus Athanas is described based on a specimen from Wakasa Bay, Japan. It shows some morphological differences compared to A. sydnyensis. Preliminary genetic analysis using the mitochondrial 16S rRNA gene was conducted to compare genetic divergence within the genus.
Article
Multidisciplinary Sciences
Sabrina Morilhas Simoes, Rogerio Caetano Costa, Fabricio Lopes Carvalho, Abner Carvalho-Batista, Sarah de Souza Alves Teodoro, Fernando L. Mantelatto
Summary: This study genetically compared specimens of Acetes americanus collected in South America with Acetes americanus carolinae sampled in North America. The results showed clear genetic differences between them, supporting the idea that A. a. americanus and A. a. carolinae are distinct subspecies. Additionally, a new subspecies, A. a. Brazil 2, was discovered on the Brazilian coast. Further research is needed to confirm and describe this new subspecies.
Article
Marine & Freshwater Biology
Krista D. Baker, David A. Fifield, Darrell R. J. Mullowney, Katherine R. Skanes
Summary: The study found that the striped shrimp in the Canadian northwestern Atlantic were substantially larger than previously observed in nearby habitats, with the transition size not remaining constant and being influenced by the average size of females and the amount of preferred habitat in the previous year. Additionally, the probabilities of individuals exhibiting black gill or black shell disease, or being infected with a bopyrid parasite were generally related to sex, depth, temperature, salinity, latitude, and shrimp density. The study suggests that the species should be closely monitored in the future in relation to exploitation pressure and climate change.
JOURNAL OF CRUSTACEAN BIOLOGY
(2021)
Article
Zoology
Tomoyuki Komai, Rafael Lemaitre
Summary: This study compared materials from different localities in the North Pacific and North Atlantic and reinstated Hippolyte St. Pauli as a valid species of the thorid genus Lebbeus. It identified distinct differences between Lebbeus sanctipauli and Lebbeus polaris. Although L. polaris is believed to have a circumpolar distribution, its occurrence in the North Pacific Ocean needs further verification.
Article
Marine & Freshwater Biology
Douglas Fernandes Rodrigues Alves, Samara de Paiva Barros-Alves, Silvio Santana Dolabella, Ariadine Cristine de Almeida, Pablo Ariel Martinez
Summary: An integrative taxonomic approach was used to confirm the introduction of shrimp Cinetorhynchus erythrostictus into the Western Atlantic Ocean, where it is being sold in Brazil's marine aquarium trade misidentified as C. rigens. Ecological niche overlap of 26% between the invasive and native species indicates potential competitive interactions across environmental gradients. Efforts should be increased to accurately identify marine species in trade to reduce the risk of invasive species spread and ecological damage to native biodiversity.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Zoology
Hossein Ashrafi, Arthur Anker, Zdenek Duris
Summary: A new alpheid shrimp species, Salmoneus shojaei sp. nov., was discovered during a survey of mangrove infauna in the Persian Gulf and the Gulf of Oman. The new species shares morphological similarities with other members of the S. gracilipes species group but possesses unique combinations of characteristics that distinguish it from others. Genetic analysis using DNA barcoding and gene fragments provides further confirmation of the new taxon.
Article
Zoology
Tomoyuki Komai, Isao Hirabayashi
Summary: A new species of the processid shrimp genus Nikoides has been described and compared with known congeners, showing unique characteristics in dentition and antennular stylocerite shape. Genetic divergence among species was analyzed, and an identification key to 11 species of Nikoides, including the new species, was provided.
Article
Marine & Freshwater Biology
Humberto Garcia-Velazco, Alejandro M. Maeda-Martinez, Hortencia Obregon-Barboza, Gorgonio Ruiz-Campos, Gabino A. Rodriguez-Almaraz, Gopal Murugan
Summary: The amphidromous species of Macrobrachium Spence Bate, 1868 occurring on the Mexican Pacific slope show a disjunct distribution, recent studies indicate that individuals from the Baja California Peninsula are conspecific to their respective taxonomic entities found along the Pacific slope of mainland Mexico.
JOURNAL OF CRUSTACEAN BIOLOGY
(2021)
Article
Zoology
Arthur Anker, Sammy De Grave
Summary: A new shrimp genus, Opaepupu gen. nov., has been established for a bivalve-associated shrimp species, Opaepupu huna sp. nov., discovered in Hawaii. The characteristics of this new genus include specific features of the rostrum, carapace, pleonite, telson, antennular peduncle, mandible, maxillular palp, maxilliped, maxilliped, pereiopods, and uropodal exopod. Phylogenetically, the position of Opaepupu gen. nov. remains unclear and it does not seem closely related to other bivalve-associated palaemonid genera.
Article
Zoology
Ryunosuke Yamashita, Tomoyuki Komai, Koetsu Kon
Summary: A new species of the alpheid shrimp genus Metabetaeus is described based on specimens collected from central Japan. This new species, Metabetaeus lapillicola, inhabits interstitial spaces among small pebbles, which is an unusual habitat for both Metabetaeus and other carideans. Phylogenetic analyses using mitochondrial genes confirm the recognition of this new species. The generic diagnosis of Metabetaeus is emended to include the new species.
Article
Marine & Freshwater Biology
Valentin De Mazancourt, Ahmed Abdou, Magalie Castelin, Celine Ellien, Clara Lord, Marion Mennesson, Clementine Renneville, Gerard Marquet, Philippe Keith
Summary: By studying the population structure of Caridina natalensis in the South Western Indian Ocean, we found significant regional structure among the spice islands, indicating complex patterns of dispersal involving extinction-recolonization events. Through comparative analysis with other amphidromous species, we drew conclusions about the biogeography of amphidromous organisms in the region. We also proposed a new classification of amphidromous species based on their population structure and life history traits, and identified the Comoros Islands as a critical area for conservation efforts.
Article
Zoology
Yumi Henmi, Gyo Itani, Masayuki Osawa, Tomoyuki Komai
Summary: A new species of the Callianassa genus, the first from the Pacific region, is described and illustrated in this study. Molecular phylogenetic analysis using the mitochondrial 16S rRNA gene confirms the close relationship between the new species and another congeneric species. The study also explores the contentious taxonomic status of another congeneric species.
Article
Zoology
Arthur Anker, Zdenek Duris
Summary: A new species of the genus Athanas, associated with stomatopods, is described. It is distinguished by its unique morphological characteristics and diagnostic color pattern. This represents the fifth species of Athanas known to be associated with stomatopod burrows.
Article
Zoology
Xuankong Jiang, Jiajun Zhou, Jianguo Wang, Wenlong Chen, Huiming Chen
Summary: Sinodina Liang & Cai, 1999 is an endemic genus of atyid shrimp in China, found only in the Yunnan-Guizhou Plateau. In this study, we describe thirteen species of Sinodina and report the first cave-dwelling species of the genus, Sinodina ashima sp. nov., collected from a limestone cave in Shilin County, Yunnan Province. Phylogenetic analysis shows that this new species is closely clustered with the type species of the genus, Sinodina gregoriana (Kemp, 1923), supporting its generic status.
Article
Marine & Freshwater Biology
J. Antonio Baeza, Sanjeevi Prakash, Pavlina Frolova, Zdenek Duris, Arthur Anker
Summary: Phenotypic dissimilarity does not always evolve in concert with genetic diversification, resulting in cryptic species complexes. In this study, using morphological traits and molecular phylogenetic analyses, it was found that Saron marmoratus and S. neglectus represent two cryptic species complexes that diversified in somewhat parallel ways. This research is important for revealing the extent and magnitude of cryptic species complexes in coral reefs.
Article
Anatomy & Morphology
Natalia Rossi, Joao Alberto Farinelli Pantaleao, Fernando L. Mantelatto
Summary: Males of M. olfersii exhibit morphological variability and can be classified into three distinct morphological groups based on morphometric analysis and genetic sequencing.
Article
Ecology
Pedro A. Peres, Fernando L. Mantelatto
Summary: Studying the predictors of genetic diversity in crabs, population size fluctuation was found to be the most critical factor, with species that have undergone bottlenecks and population expansion showing lower genetic diversity. Egg size, pelagic larval duration, and habitat may also play a role in genetic diversity. This study adds to our understanding of the predictors of genetic diversity by examining a marine invertebrate group.
JOURNAL OF EVOLUTIONARY BIOLOGY
(2023)
Article
Zoology
Darryl L. Felder, Rafael Lemaitre, Fernando L. Mantelatto
Summary: The present study provides a comprehensive redescription of the mole crab Emerita portoricensis based on specimens from Puerto Rico, Belize, Costa Rica, and Panama. The study highlights the variation in key morphological characters and clarifies its distribution. Additionally, the study documents the distinct carapace coloration of E. portoricensis compared to related species.
Article
Genetics & Heredity
Pedro A. Peres, Heather Bracken-Grissom, Laura E. Timm, Fernando L. Mantelatto
Summary: This study used mtDNA data and ddRAD-seq technology to explore the diversification patterns and processes within the swimming crab C. ornatus. The results showed significant genetic differentiation between groups on the north and south sides of the AOP, but also signs of hybridization. Demographic modeling indicated that divergence started around 8 million years ago following the formation of the AOP. The study suggested that speciation with gene flow was explained by the interplay among the AOP, oceanographic currents, and long larval dispersal.
Article
Zoology
Fernando L. Mantelatto, Juliana M. Paixao, Rafael Robles, Jeniffer N. Teles, Felipe C. Balbino
Summary: The taxonomic status and distribution of some species of the genus Emerita in the western Atlantic were uncertain. A thorough examination of morphological differences and genetic markers revealed a new species, Emerita almeidai, along the Brazilian coast. Molecular phylogenetic analysis showed that individuals previously identified as E. portoricensis were actually divided into two clades, one from the Brazilian coast and the other from Central America. This study increases the number of species in the genus Emerita to 12, with different distributions in the Atlantic, Indo-Pacific, and eastern Pacific.
Article
Multidisciplinary Sciences
Sabrina Morilhas Simoes, Rogerio Caetano Costa, Fabricio Lopes Carvalho, Abner Carvalho-Batista, Sarah de Souza Alves Teodoro, Fernando L. Mantelatto
Summary: This study genetically compared specimens of Acetes americanus collected in South America with Acetes americanus carolinae sampled in North America. The results showed clear genetic differences between them, supporting the idea that A. a. americanus and A. a. carolinae are distinct subspecies. Additionally, a new subspecies, A. a. Brazil 2, was discovered on the Brazilian coast. Further research is needed to confirm and describe this new subspecies.
Article
Reproductive Biology
Felipe Bezerra Ribeiro, Helena Matthews-Cascon, Fernando Luis Mantelatto, Luis Ernesto Arruda Bezerra
Summary: We compared the fecundity and reproductive effort of two hermit crab species, Clibanarius antillensis and Calcinus tibicen, distributed along the Brazilian coast. Samples were collected at two locations separated by approximately 3000 km - Pedra Rachada Beach (Ceara) in the NE region and Araca Beach/Grande Beach (Sao Paulo) in the SE region. The results showed higher values for females of both species collected in the SE localities, with the presence of aberrant eggs affecting the reproductive parameters in NE females and resulting in lower reproductive effort. The variation in reproductive performance may be related to the latitudinal location and habitat characteristics.
INVERTEBRATE REPRODUCTION & DEVELOPMENT
(2023)
Article
Marine & Freshwater Biology
Gabriel L. Bochini, Andressa M. Cunha, Mariana Terossi, Alexandre O. Almeida
Summary: The stenopodidean shrimp Chicosciencea pernambucensis was identified as a new species from Brazil based on both morphological and molecular analyses. However, another scientist proposed that it should be considered a synonym of the genus Microprosthema. In this study, the researchers comment on this synonymy and argue that Chicosciencea should be recognized as a separate and valid genus.
JOURNAL OF CRUSTACEAN BIOLOGY
(2023)
Article
Zoology
Lucas Oliveira-Rogeri, Nielson Felix Caetano Franca, Pedro Augusto Peres, Fernando L. Mantelatto
Summary: This study assessed the Panopeus species in the Southwestern Atlantic using morphological and genetic data, providing updated diagnoses and clarifying phylogenetic relationships. The nonmonophyletic nature of the genus was confirmed, and the study highlighted the importance of an integrative approach for accurate identification.
ZOOLOGISCHER ANZEIGER
(2023)
Article
Ecology
Ronaldo Ruy Oliveira-Filho, Joelson Musiello-Fernandes, Helen Audrey Pichler, Mariana Antunes, Ciro Colodetti Vilar, Fernando Luis Mantelatto, Arthur Anker, Andre Pereira Cattani, Julien Chiquieri, Jean-Christophe Joyeux, Mauricio Hostim-Silva
Summary: The study examines the impact of the Fundao dam collapse on the species richness and assemblage structure of decapod and stomatopod crustaceans in the Rio Doce basin in Brazil. Samples collected from October 2018 to September 2019 showed that the dominant species in the community were Xiphopenaeus kroyeri. Species composition varied significantly among different locations, habitats, and seasons, with freshwater discharge playing a crucial role. The study highlights the need for long-term monitoring and emphasizes the difficulty in detecting and studying the effects of such disasters.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Article
Marine & Freshwater Biology
Gabriel Lucas Bochini, Rodrigo Gueron, Mariana Terossi, Alexandre Oliveira Almeida
Summary: This study reports the collection of two Alpheus christofferseni specimens from Pernambuco, Brazil, increasing the knowledge of the species distribution along the Brazilian coast. The specimens were found approximately five latitudinal degrees south of the species' type locality, and also expanded the known bathymetric distribution from shallow intertidal to approximately 51 m. Morphological variation notes are provided based on the new material, and the first sequence of the 16S ribosomal subunit gene for the Brazilian coast is provided and compared with congeners.
Article
Marine & Freshwater Biology
Rodrigo Gueron, J. Antonio Baeza, Gabriel Lucas Bochini, Mariana Terossi, Alexandre Oliveira Almeida
Summary: Currently, out of the 50 species of Lysmata, 14 species have a long accessory branch. A new species, Lysmata elisa sp. n., with a long accessory branch has been discovered in northeastern Brazil. This finding highlights the significance of using integrative taxonomic approaches to increase our understanding of biodiversity.
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
(2023)
Meeting Abstract
Zoology
P. A. Peres, H. Bracken-Grissom, L. Timm, F. L. Mantelatto
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2023)
Article
Zoology
Giuliano Buza Jacobucci, Alessandra A. De P. Bueno, Ariadine Cristine De Almeida, Douglas Fernandes Rodrigues Alves, Samara De Paiva Barros-alves, Celio Magalhaes, Edvanda A. Souza-Carvalho, Emerson C. Mossolin, Fabricio Lopes Carvalho, Fernando L. Mantelatto
Summary: Brazil has around 5% of the total known species of freshwater decapods. Information on the occurrence of these species in the state of Minas Gerais is scattered and mostly unpublished. This study presents the first inventory of freshwater decapods in the state, recording 11 species including crabs, shrimps, and squat lobsters.
Article
Genetics & Heredity
Andres R. Domingos, Abner Carvalho-Batista, Rafael Robles, Marlene S. Arcifa, Fernando L. Mantelatto
Summary: In this study, species-specific primers were developed to analyze food-web interactions in a tropical shallow lake. The primers successfully amplified the DNA target of the microcrustacean preys and showed high specificity and sensitivity. This technique provides an efficient tool for food-web research and identification of zooplankton species from predator's digestive tracts.
MITOCHONDRIAL DNA PART A
(2023)